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Sphaerodactylus underwoodi SCHWARTZ, 1968

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Higher TaxaSphaerodactylidae, Gekkota, Sauria, Squamata (lizards: geckos)
Common NamesE: Turks Islands Geckolet, Underwood'sLeast Gecko 
SynonymSphaerodactylus underwoodi SCHWARTZ 1968: 250
Sphaerodactylus underwoodi — SCHWARTZ & HENDERSON 1991: 543
Sphaerodactylus underwoodi — KLUGE 1993
Sphaerodactylus underwoodi — RÖSLER 2000: 114 
DistributionTurks Islands, Grand Turk Island

Type locality: Cockburn Town, Grand Turk Island, Turks Islands.  
TypesHolotype: CM 40637. 
DiagnosisDESCRIPTION: Size moderate (SVL to 30 mm in males, to 32 mm in females); dorsals small, acute, strongly keeled, flattened, imbricate, axilla to groin 29-39; no area of middorsal granules or granular scales; ventrals smooth, cycloid, imbricate, axilla to groin 25-34; dorsal caudal scales keeled basally, smooth distally, acute, imbricate, flat-lying, ventral caudal scales smooth, cycloid, enlarged midventrally; snout acuminate, long, head narrow; snout scales large, narrow, flat, juxtaposed; 2 postnasals; 1-2 (mode 1) internasals; upper labials to mideye 3; gular scales keeled to smooth, with at least 1 transverse row with some faint keels; chest scales smooth; midbody scales 44-57; escutcheon short, compact, with extensions onto thighs seldom reaching to behind knee, 3-5 x 20-26. Pattern sexually dichromatic; dorsum (in both sexes) chestnut brown; head yellowish to orange; dorsum (males) immaculate or with widely scattered, individual, dark scales giving overall "salt-and-pepper" pattern, or with an irregular pattern of anastomosing brown markings on yellow to orange ground; throat immaculate or with some vague darker brown flecking laterally; tail concolor with dorsum and marked with admixed darker brown and gray flecks; dorsum (females) heavily stippled or "salt-and-pepper"; head with: (1) a pair of dark postocular stripes extending onto anterior dorsolateral region of body, and (2) a median figure, extending posteriorly from interocular area onto neck, twice constricted on head to give a transversely tripartite element of which the median portion is subcircular; on neck the 2 dark dorsolateral lines and median figure continue to scapular area as a trilineate figure; no scapular markings; throat immaculate (Schwartz & Henderson 1991: 543). 
CommentFor illustrations see Schwartz, 1968. 
EtymologyNamed after Garth Leon Underwood (1919-2002), British herpetologist (obituary in Copeia 2003: 222-225). 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Rösler, H. 2000. Kommentierte Liste der rezent, subrezent und fossil bekannten Geckotaxa (Reptilia: Gekkonomorpha). Gekkota 2: 28-153
  • Schwartz, A. 1968. The geckos (Sphaerodactylus) of the southern Bahama Islands. Annals of the Carnegie Museum 39: 227-271. - get paper here
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
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